Sunday, March 23, 2008

steam shadows

as i watched water boil (no it doesnt affect it :-) ), i noticed that the steam/vapor induced a shadow on the wall but i couldnt actually see the vapors.
a. are there other such examples where things can be seen in shadows but through eyes?
b. is this because the human eye doesnt have sufficient resolution -- e.g. would a hi-fi camera pick it up?

any answers?

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